function launch_concentrator()
{
$this->concentrator_pid = pcntl_fork();
if ($this->concentrator_pid == -1) {
$errno = posix_get_last_error();
throw new Exception("Error forking off mysql concentrator: {$errno}: " . posix_strerror($errno) . "\n");
} elseif ($this->concentrator_pid == 0) {
$mysql_concentrator = new MySQLConcentrator\Server();
$mysql_concentrator->run();
exit;
}
}
<?php
require_once dirname(dirname(dirname(__DIR__))) . '/autoload.php';
function write_error($msg)
{
$stderr = fopen('php://stderr', 'w');
fwrite($stderr, $msg);
}
$options = getopt("h:p:l:");
$exit_status = 0;
if (!array_key_exists('h', $options)) {
write_error("You must provide a host parameter (-h).\n");
$exit_status = 64;
}
if (!array_key_exists('p', $options)) {
write_error("You must provide a port parameter (-p).\n");
$exit_status = 64;
}
if ($exit_status == 0) {
$settings = array('host' => $options['h'], 'port' => $options['p']);
if (array_key_exists('l', $options)) {
$settings['listen_port'] = $options['l'];
}
$mysql_concentrator = new MySQLConcentrator\Server($settings);
$mysql_concentrator->run();
}
exit($exit_status);